How does benzaldehyde reacts with acetophenone in presence of dilute alkali?

The reaction in which benzaldehyde reacts with acetophenone in presence of sodium hydroxide solution is known as cross aldol condensation reaction in which benzaldehyde which is aromatic aldehyde compound reacts with acetophenone which aliphatic alkyl ketone and sodium hydroxide acts as an catalyst here.

How are Chalcones recrystallized?

The dissolution of the chalcone in ethanol has been performed aided by a water bath at 50 °C. The recrystallization of the compound is performed by cooling the mixture at room temperature to get the first crystals and then moved to the fridge (4 °C) for about 20 min.

What is chalcone RF value?

P= Product (chalcone 2) C = Co-Spot R = Reduction product 6.50 cm 3.25 cm 2.75 cm P С R A. 0.846 B.

What causes a triplet of triplets?

For example, BrCH2CH2CH2Cl would produce three signals. The hydrogens at C1 and C3 would each be triplets because of coupling to the two hydrogens on C2. However, the hydrogen on C2 “sees” two different sets of neighbouring hydrogens, and would therefore produce a triplet of triplets.

What is integration NMR?

Integration: In NMR spectroscopy, the process of measuring the area of an NMR signal. The area corresponds to the amount of energy absorbed or released by all nuclei of a given chemical shift during the nuclear spin flip process.

How will you distinguish between acetophenone and benzaldehyde?

(vi) Benzaldehyde and acetophenone can be distinguished by the following tests. Aldehydes respond to Tollen’s test. Benzaldehyde being an aldehyde reduces Tollen’s reagent to give a red-brown precipitate of Cu2O, but acetophenone being a ketone does not.

What is the product of benzaldehyde and acetophenone?

benzylideneacetophenone
Acetophenone and benzaldehyde react and form benzylideneacetophenone (chalcone) in presence of ethanol and NaOH.

Why do Chalcones have color?

ABSTRACT: Chalcones are open analogues of flavonoids and give bright red to purple colours with different reagents which can be used to distinguish them from other flavonoids such as flavanones, flavones, aurones etc.

What is chalcone used for?

Nowadays, several chalcones are used for treatment of viral disorders, cardiovascular diseases, parasitic infections, pain, gastritis, and stomach cancer, as well as like food additives and cosmetic formulation ingredients.

What is the molar mass of acetophenone?

120.15 g/molAcetophenone / Molar mass